#include <stdio.h>
#include <string.h>
#include <unistd.h>

int main()
{
    const char* st1 = "hello printf\n";
    const char* st2 = "hello fwrite\n";
    const char* st3 = "hello write\n";

    printf("%s",st1);
    fwrite(st2,strlen(st2),1,stdout);
    write(1,st3,strlen(st3)); 
    fork();
    return 0;
}
